Removable tip for the contacting ends of armature-springs.



O. M. PROGTOR. REMOVABLE TIP FOR THBGONTAGTING ENDS 0F ABMATURE SPRINGS. APPLICATION FILED OGT.19, 1912.

1,093,076. Patented Apr. 14, 1914,

IN VE N TOR WWW COLUMBIA PLANomzAvu c0" WASHINGTON, D c,

CHARLES M. PROCTOR, 0F DETROIT, MICHIGAN.

REMOVABLE TIP FOR THE CONTACTING ENDS OF ARMATURE-SPRINGS.

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Specification of Letters Patent.

Application filed October 19, 1912.

Patented Apr. 14, 1914. Serial No. 726,684.

To all 107mm it may concern Be it known that I, CHARLES M. Pnooron, who am a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Removable Tips for the Contacting Ends of Armature-Springs, of which the following is a specification.

This invention relates to renewable tips for the contacting end of the armature spring of an electric bell, and has for its object an improved device of this type which is capable of easy substitution and renewal as the original member in this position wears out through continued use.

In the drawings: Figure l is a perspective of a portion of a bell armature and its spring, showing one of my improved renewable tips in place thereon. Fig. 2 is an elevational showing of the reverse or under side of the spring, with a clip in position thereon. Fig. 3 is a perspective of the clip alone. Fig. 4 is an end elevation of the extreme end of the armature spring, with the clip in place thereon.

A indicates the bell armature, to which is attached, by any desired means, as by rivets C, the contact spring B, whose pointengaging end D is, under continued use, or because of the arcing of the current, apt to be worn down long before the other parts of the bell become any the worse for wear. I have therefore devised the removable and renewable tip E, whose body portion is adapted to engage over the end D of the armature spring, preferably with a contact knob F in its central portion, the base of which may engage in a correspondingly located indentation G in the spring end D. Extending from three sides of the body of the tip E are engaging arms or fingers H,

which are adapted to be bent over the edge of the end of the armature spring and against the reverse face. This serves to firmly hold the removable tip in place, and yet permits of its easy and quick removal when its point-engaging portion becomes worn through.

What I claim is 1. A renewable contact tip for an armature spring, comprising a body portion adapted to engage one face of the end of the spring, armmembers projecting from the edge of said body portion, adapted to be bent over the edge of said spring end and against that face thereof not engaged by the body section of the tip, and a contact knob projecting outwardly from the central part of said body portion.

2. As a new article of manufacture, a renewable tip for an armature spring comprising a unitary member whose central portion is adapted to engage one face of the spring, radiating branch portions adapted to be bent over the edges of the spring, thereby removably attaching the tip thereto, and a contact knob supported thereby in position to be engaged by an adjacent contact pin, substantially as described.

3. A contact tip for an armature spring, comprising a central body portion, and integral radiating arms for engagement over the edges of said spring, whereby the tip is held firmly in position thereon, and a contact knob carried by said body portion in position to engage an opposing contact point.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES M. PROOTOR.

\Vitnesses:

WILLIAM M. SWAN, JEFFERSON G. THURBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

